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What Are the Reasons for the Differences Between Automatic and Manual Transmissions?

2 Answers

StBrynlee

08/30/25 2:06am

The differences between manual transmissions and automatic transmissions are as follows: 1. Different Principles: (1) Manual Transmission: The driver manually shifts the gear lever (shift knob) to change the gear engagement positions inside the transmission, altering the gear ratio to achieve speed changes. (2) Automatic Transmission: While driving, the driver operates the accelerator pedal as needed, and the automatic transmission automatically shifts into different gears based on engine load and the vehicle's operating conditions. It can automatically change gears according to the vehicle's speed and engine RPM. 2. Characteristics: (1) Manual Transmission: Stable performance, high transmission efficiency, and high fuel utilization. (2) Automatic Transmission: Easy to operate with flexible gear ratios. There are various types, including hydraulic automatic transmissions, mechanical continuously variable transmissions (CVT), electronically controlled mechanical automatic transmissions, and dual-clutch automatic transmissions. The transmission is connected to the engine via a clutch, allowing the transmission's input shaft to synchronize with the engine's RPM. 3. Transmission Efficiency: Due to the manual transmission's purely mechanical operation compared to the hydraulic transmission of the automatic transmission via a torque converter, there is a difference in efficiency, directly leading to variations in fuel consumption. For cars of the same brand and displacement, manual transmissions can save approximately 10% more fuel than automatic transmissions.

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VanCaroline

09/11/25 6:20am

After years of driving, I believe the fundamental difference between automatic and manual transmissions lies in the operation method. Automatic transmissions eliminate the need to press the clutch for gear changes, making them particularly suitable for effortless driving in urban traffic jams; manual transmissions require manual operation of the clutch and gearshift, offering more active control. The reason? The accelerating pace of social development has led people to pursue convenience and safety. Manual transmissions originated from early automotive designs, relying on mechanical connections to improve efficiency, making them suitable for low-cost maintenance. With technological advancements, automatic transmissions utilize torque converters and electronic controls to reduce operational errors and enhance comfort. Especially for novice drivers, automatic transmissions lower the learning curve. However, manual transmissions have an advantage in precise control, such as faster RPM matching, delivering a more exhilarating driving experience.

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